lin^ up your nose. Bread is made " light " by means of the carbon 

 dioxid, which crawls through the dough and makes it full of 

 bubbly holes. 



When the partnership was going 

 on between the candle and the oxygen, 

 considerable heat was given off. Per- 

 liaps your teacher can tell you if any 

 partnership between oxygen and car- 

 bon is going on in our bodies ; how it 

 is done ; if the heat of our bodies is 

 due to that ; if the breath we send out 

 from the lungs is not carbon dioxid, 

 and if a little mouse would die if shut 

 up in it. 



Yery little people will be unable to 

 understand this lesson, so Uncle John 

 will not expect them to write 

 about oxygen, carbon and car- 

 bon dioxid. He knows that 

 they like better to study about 

 real live things, but during the 

 winter weather it is hard to 

 find some of Mother Nature's most interesting children ; she has 

 either sent them to warmer lands, or tucked them up cosily in bed, 

 where they cannot feel the cold. 



"Bob-o'-Lincoln-oh, so wise !* 

 Goes to sleep 'neatb summer skies, 

 'Mid the leaves. 



Mr. Bniin, night and day, 

 Snoozes all his time away, 

 In his cave ! 



Squirrel Red with nuts — a store I 

 In hollow tree trunks loves to snore, 

 In the wood. 



Mrs. Woodchuck 'ueath some knoll, 

 Drowses in her bed — a hole ! 

 Deep in earth. 



Fig. 2. 



* A. F. Caldwell in Youth's Companion. 



600 



